Cookie-bite hearing loss is the nickname given to what is clinically known as mid-frequency hearing loss. It gets this nickname from how it appears on your audiogram; it features a large U-shaped dip in the middle of the chart, as if someone took a bite out of it. It’s an exceedingly rare form of hearing loss, with a prevalence of less than 1%.
What Is Cookie-Bite Hearing Loss?
Humans can hear a wide range of pitches, from low (such as thunder or machinery) to high (such as birdsong or a child’s squeal). People with cookie-bite hearing loss struggle to hear the middle range of pitches more than high or low pitches, which is uncommon; typically, people with hearing loss lose the high pitches first.
A lot of human speech and music falls into the middle range of pitches, meaning that people with cookie-bite hearing loss tend to have a lot of trouble hearing people speaking to them. Some symptoms of this include:
- Reduced listening comprehension
- It sounds as though everyone is mumbling
- Not hearing words clearly
- Struggling to follow a conversation in a crowded area, as the background noise is easier to hear than the speech
- Turning up the volume on the TV, especially during dialogue-heavy scenes
- Missing parts of music or melodies, especially mid-range instruments or vocals
Causes of Cookie-Bite Hearing Loss
Cookie-bite hearing loss is almost always caused by genetics, particularly a genetic mutation of the TECTA gene, which is essential for the development of the tectorial membrane, which helps the brain interpret sound waves. This mutation can be carried by either parent, even if they do not have cookie-bite hearing loss.
As with all genetics-related types of hearing loss, hearing loss may be present at birth (congenital) or acquired over time (progressive), not showing up until adolescence or early adulthood. If hearing loss is progressive, it may also be influenced by other, more common causes, such as aging or exposure to loud noise.
Treating Cookie-Bite Hearing Loss
As with all types of hearing loss, there is no cure for cookie-bite hearing loss and it cannot be reversed. But it can be managed with the help of a hearing health professional, such as an audiologist.
Prescription hearing aids are an effective tool for treating cookie-bite hearing loss. Modern hearing aids feature sophisticated digital sound processors that analyze the frequency spectrum of all sounds entering your ear and specifically amplify the pitches you need to hear. This makes them ideal for amplifying the mid-range sounds that cookie-bite hearing loss diminishes.
If you’ve been struggling to follow conversations or hear speech, it’s time to schedule a comprehensive hearing test and see your hearing abilities mapped out on an audiogram. With this information in hand, you and your audiologist can build a hearing loss treatment plan that perfectly meets your hearing needs. Contact Gulf Coast Audiology today to learn more or to schedule an appointment.
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